first-night effect
 n.— «The rooms will be recreated at the athletes’ village in Turin, helping the Americans avoid what scientists call the “first-night effect,” which is similar to jetlag and can hinder performance.» —“U.S. Olympic Dreams May Rest on Softer Pillows” by Scott Soshnick Bloomberg.com Dec. 15, 2005. (source: Double-Tongued Dictionary)

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